Another app is currently holding the yum/apt lock; waiting for it to exit...

The cloud servers will update in the background when you first start/create them. If you see this it means an update is running and you will need to wait for it to finish before you can use yum or apt to install or update the server. Sometimes this can take several minutes, depending on how many updates need to run.

If the server takes more than 5 minutes to finish updating, submit a ticket (or email support@LinuxAcademy.com with the hands-on lab or distribution name so we can make sure the image gets updated.